Bench-hook



G. J. KEMPF.

BENCH HOOK.

(No Model.)

Patented July 12, 18972.

UNITED TATES PATENT OFFICE.

CHARLES .T. KEMPF, OF SEYMOUR, CONNECTICUT.

BENCH-HOOK.

SPECIFICATION forming part of Letters Patent No. 478,797, dated July 12,1892. Application filed December 14:, 1891. Serial No. 414,974. (Nomodel.)

To all whom it may concern:

Be it known that I, CHARLES J. KEMPF, of Seymour, in the county of NewHaven and State of Connecticut, have invented a new Improvement inBench-Hooks; and I do hereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in

Figure 1, a top or plan view showing the hook as secured to a bench;Fig. 2, a vertical central section of the socket, showing the spindleand its head, spring, and dog in side view; and Fig. 3, a transversesection through the spindle cutting above the flange on linecc :7; ofFig. 2.

This invention relates to an improvement in the construction of thedevice employed on joiners benches against which a board to be planed isset, commonly called bench-hook, the object being a simple constructionfor the vertical adjustment of the hook; and it consists in theconstruction, as hereinafter described, and particularly recited in theclaim.

A represents the socket, which is adapted to set into or through the top13 of the bench. At its upper end the socket is constructed with aflange C to set into the surface of the bench and substantially flushtherewith.

The body of the socketisscrew-threaded,and

onto the screw-threaded portion a nut D is applied; to bear against theunder side of the bench, and so as to clamp the bench between the flangeC and the nut 'D, and thus firmly hold the socket in place. The socketis tubular, the opening through it being square or angular, as shown,and into the opening through the'socket the spindle E is set, so as tomove freely up and down. Near the lower end of the socket a spring F isarranged upon which the lower end of the spindle will bear, the tendencyof the spring being to force the spindle upward. At the upper end thespindle terminates in a head G, of angular shape, adapted to sink into arecess formed in the surface of the flange C, so that the head may bedepressed flush with the surface of the flange. The head G has its edgestoothed or otherwise shaped in the usual manner to engage the board setagainst them. The spindle E on one side is constructe with a series ofteeth forming a vertical rack H, and in the socket a spring-dog I isarranged extending down inside the socket and secured by its lower endto the socket by a screw or otherwise, as represented at J The dogextends upward and through the flange below the head, and is thereconstructed with a nose K, which is adapted to engage the teeth of therack, H. In the flange C at one side of the head G a recess L is formed,and a projection from the dog extends into said recess forming athumb-piece M in convenient position to be reached by the thumb orfinger, or any suitable device applied thereto. The tendency of thespring of the dog is to hold the dog into engagement with the teeth ofthe rack on the spindle E, as shown in Fig. 2; but by applying the thumbor finger or other suitable instrument to the thumb-piece M, the dog maybe withdrawn,as represented in broken lines, Fig. 2, so as to disengageit from the spindle, when the spindle will be left free to rise underthe action of its own spring or to be drawn up as the case may be; orifit is desired to depress the spindle and its head the same releasing isproduced between the spindle and the dog, and then the spindle depresseduntil the required elevation is attained when the dog is left free toreturn into engagement with the rack of the spindle. Thus the spindle,with its head, may be adjusted to any desired elevation or may beentirely removed, if desirable, by Withholding the dog from engagementwith the spindle. Preferably the spindle is reduced in diameter at itslower end, so as to form a tail N, which will extend through the lowerend of the socket, the spring F resting upon the shoulder formed by thereduced opening in the socket and around the spindle. The teeth of therack present a substantially right-angular shoulder to the nose of thedog, so that while the dog 1s engaged the spindle and its head will beheld stationary, so that it cannot be accidentally raised or depressed.

I do not broadly claim in a bench-hook a socket having a recessedfi'ange at its upper IOO end adapted;to be inserted into the benchcombined with a spindle movable up and down in the said socket andcarrying a head adapted to set into the recess, and a springdog adaptedto engage corresponding teeth on the side of the spindle, as such I amaware is not new.

I claim- The herein-described bench-hook, consisting of the tubularsocket A, constructed with a flange C at its upper end adapted to restupon the top of the bench, combined with a spindle E, movable up anddownwithin the socket, and constructed with a head G at its upper end,the flange Oconstructed with a recess corresponding to and so as toreceive said head in its depressed position and also constructed with arecessL at one side of said recess, the spindle constructed with atoothed rack upon that side corresponding to the said recess L with avertical spring-dog arranged in the side of the socket in which the saidrecess L is formed and rigidly secured by its lower end in the socket,the dog extending upward terminating at its upper end with a thumb-pieceM in the said recess L, and the dog provided with a nose K, adapted tonormally stand in engagement with the teeth of the said rack on thespindle, but by its own elasticity adapted to yield to be withdrawn fromsuch engagement by means of the thumb-piece M, all substantially as andfor the purpose described.

In testimony whereof I have signed this specification in the presence oftwo subscrib- 3 5 ing witnesses.

CHARLES J. KEMPE Witnesses:

GEORGE M. TURNER, NOBLE J. BALDWIN.

